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Asthma cases in Americans are about 75% higher today than they were in 1980.
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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.
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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.